Regular Expression is a pattern or sequence of characters. This method is effectively used to match the specific pattern within a string and to extract the pattern of the string precisely to do various manipulations.Which may include splitting strings, replacing characters. Regular expression is one of the most powerful ways to do string manipulation,it is preferred to string functions for specific string manipulation needs.

This tutorial is aimed at the basic's of the Regular expression.That is to do string manipulation using the basic meta characters available in almost all languages in common.